How do we know the sun-earth distance

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Question

Chapter 19 Measuring Celestial Distances:

1. How do we (humans) estimate distances? (hint: visual cues)

2. What is parallax?

3. What is triangulation?

4. How do we measure Distances between cities?

5. How do we know the size of the Earth (Hint: Eratosthenes)?

6. How do we know the Sun-Earth distance?

7. What is the Astronomical Unit?

8. Why is the parallax of stars so hard to measure?

9. What is a parsec and how is it defined?

10. What is a 'standard candle'?

11. What is a Cepheid variable and why are they useful?

12. What is the period-luminosity relationship?

13. How can H-R diagram help us measure the distance to a star cluster?

14. How do we measure the largest distances in space?

Reference no: EM134045952

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